We have been using GO under Server 2008r2 for years, and currently running the latest 6.2
It sounds like 6.3 (from the system requirements at https://groupoffice.readthedocs.io/en/latest/install.html#system-requirements ) is only going to work in Linux?

First snag in trying to upgrade from 6.2.101 to 6.3.32
(and yes, Search and Custom Fields modules were installed on the 6.2 we had running)

I did a bunch of reading, backups, prep.. and just ran the /install folder.
The first time i ran it, it presented a long list of table modifications and ended with this. Now when I re-fresh on that upgrade.php screen I keep just getting this showing up.

Looking at the long list of changes the process undertakes and outputs on screen, it RENAMES the go_model_types table to core_entity way early on.

Then near the end (or the end of what I see) it is trying to insert data into the old name, which obviously doesn't exist anymore. This completely blocks any ability to upgrade properly, leaving you stuck.

I cannot find in any file, anywhere under the installation folder, any existence of the actual command that tries to write to this renamed table. This makes no sense at all, so I can't even edit out this buggy code to try to work around it.

This error should have been caught before this was released. I realize alot of work goes into this, but really this should not have happened at a most fundamental level. I've now got no choice but to go completely backwards.. wasting half a day of my time coming in on my day off, preparing for, and finding failure of this to be able to move forward.